Quote:
Originally Posted by reefcouple  As an example, i have a 1000 watt HPS with a hortilux bulb, (145,000 lumens), an individual bulb 48' long t-5 HO will produce at most 5,000 lumens. on an 8 bulb system your very best is 40,000 lumens. |
Man, I hate being on both sides of this one. No, I don't think the T5 HO can beat out MH for penetration at this time, but I feel that I should mention a couple things. First off, not many reefers use 1,000w MH bulbs. Secondly, lumens are an indicator on how bright we see a light as being, which is of little relevance to the corals.